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. 2018 Feb 13;18:56. doi: 10.1186/s12906-018-2115-y

Fig. 2.

Fig. 2

Spheroid formation of MDA-MB-231 in serum free media at (a) day 5 and (b) day 7. All the experiments were performed in three biological replicates and each with triplicates. All data are expressed as mean ± S.E.M. with (*p < 0.05)